:root{
  --bg:#0a1020; --bg2:#0e1730;
  --panel:rgba(16,26,48,.72); --panel-border:rgba(56,189,248,.35);
  --accent:#22d3ee; --accent2:#818cf8;
  --text:#eaf2ff; --muted:#93a7c9;
  --chip:rgba(30,45,80,.6); --chip-hover:rgba(56,189,248,.18);
  --shadow:0 0 24px rgba(34,211,238,.18);
  --radius:16px;
}
body.light{
  --bg:#eef3fb; --bg2:#e2eaf7;
  --panel:rgba(255,255,255,.85); --panel-border:rgba(14,116,144,.35);
  --text:#12233f; --muted:#4d6385;
  --chip:rgba(255,255,255,.9); --chip-hover:rgba(14,165,233,.15);
  --shadow:0 6px 20px rgba(30,64,120,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  font-family:"Segoe UI","Hiragino Kaku Gothic ProN","Noto Sans JP","Microsoft YaHei","Malgun Gothic",sans-serif;
  background:radial-gradient(1200px 600px at 70% -10%,rgba(56,189,248,.15),transparent),
             radial-gradient(900px 500px at 10% 110%,rgba(129,140,248,.12),transparent),
             linear-gradient(180deg,var(--bg),var(--bg2));
  color:var(--text); min-height:100vh; overflow-x:hidden;
}
.bg-glow{position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(600px 300px at 50% 0%,rgba(34,211,238,.10),transparent 70%)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* ---------- top bar ---------- */
.topbar{
  position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;padding:16px 28px;
  background:rgba(10,16,32,.55);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--panel-border);
}
body.light .topbar{background:rgba(255,255,255,.6)}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:1px}
.brand .logo{font-size:24px;filter:drop-shadow(0 0 8px rgba(34,211,238,.6))}
.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;border-radius:999px;font-size:14px;
  color:var(--text);background:var(--chip);
  border:1px solid var(--panel-border);transition:.2s;
}
.btn:hover{background:var(--chip-hover);box-shadow:var(--shadow);transform:translateY(-1px)}
.btn-accent{background:linear-gradient(135deg,rgba(34,211,238,.25),rgba(129,140,248,.25));border-color:var(--accent)}

/* ---------- language selector ---------- */
.lang-select{position:relative}
.flag-btn{padding:6px 10px}
.flag-btn svg,.lang-panel svg{width:26px;height:18px;border-radius:3px;display:block;box-shadow:0 0 0 1px rgba(128,128,128,.35)}
.lang-panel{
  position:absolute;right:0;top:calc(100% + 8px);min-width:190px;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--panel-border);border-radius:12px;
  box-shadow:var(--shadow);padding:6px;display:none;z-index:50;
}
.lang-panel.open{display:block}
.lang-item{
  display:flex;align-items:center;gap:10px;width:100%;
  padding:8px 12px;border:none;border-radius:8px;background:transparent;
  color:var(--text);font-size:14px;text-align:left;transition:.15s;
}
.lang-item:hover{background:var(--chip-hover)}
.lang-item.active{outline:1px solid var(--accent);background:var(--chip-hover)}
.lang-item svg{width:22px;height:15px}

/* ---------- hero ---------- */
.hero{position:relative;z-index:1;text-align:center;padding:56px 20px 30px}
.hero h1{
  font-size:clamp(34px,5vw,56px);font-weight:800;letter-spacing:4px;
  background:linear-gradient(180deg,#fff,#7dd3fc 60%,#38bdf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 30px rgba(56,189,248,.35);
}
body.light .hero h1{background:linear-gradient(180deg,#0e2a52,#155e9e);-webkit-background-clip:text;background-clip:text}
.hero .sub{font-size:clamp(16px,2.2vw,22px);margin-top:14px;color:var(--text);font-weight:600}
.hero .desc{margin:14px auto 0;max-width:720px;color:var(--muted);font-size:14px;line-height:1.8}

/* ---------- cards ---------- */
.cards{
  position:relative;z-index:1;
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:22px;max-width:1200px;margin:26px auto 40px;padding:0 22px;
}
.card{
  background:var(--panel);backdrop-filter:blur(12px);
  border:1px solid var(--panel-border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px;transition:.25s;
  animation:fadeUp .5s ease both;
}
.card:hover{transform:translateY(-3px);box-shadow:0 0 34px rgba(34,211,238,.3)}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.card-head .c-icon{font-size:22px;width:42px;height:42px;display:grid;place-items:center;
  background:var(--chip);border:1px solid var(--panel-border);border-radius:10px}
.card-head h2{font-size:18px;letter-spacing:1px;flex:1}
.card-head .collapse{width:28px;height:28px;border-radius:8px;border:1px solid var(--panel-border);
  background:transparent;color:var(--text);font-size:12px;transition:.2s}
.card-head .collapse:hover{background:var(--chip-hover)}
.tools{display:grid;grid-template-columns:1fr 1fr;gap:10px;overflow:hidden;transition:max-height .3s ease}
.tools.hidden-tools{display:none}
.tool{
  display:flex;align-items:center;gap:8px;padding:10px 12px;
  background:var(--chip);border:1px solid rgba(148,163,184,.18);border-radius:10px;
  font-size:14px;transition:.18s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tool:hover{border-color:var(--accent);background:var(--chip-hover);transform:translateX(3px)}
.tool .t-icon{font-size:15px}
.card-foot{margin-top:14px;padding-top:12px;border-top:1px dashed rgba(148,163,184,.25);
  display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
.card-foot b{color:var(--accent)}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:40px 0}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- footer ---------- */
footer{position:relative;z-index:1;text-align:center;color:var(--muted);font-size:13px;padding:24px 16px 36px}

/* ---------- modal ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(4,8,20,.7);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;z-index:100;padding:16px;
}
.modal-mask.show{display:flex}
.modal{
  width:100%;max-width:460px;background:var(--panel);backdrop-filter:blur(16px);
  border:1px solid var(--panel-border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;animation:fadeUp .25s ease;
}
.modal h3{margin-bottom:16px;letter-spacing:1px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
.field input,.field select,.field textarea{
  width:100%;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text);
  background:var(--chip);border:1px solid var(--panel-border);outline:none;font-family:inherit;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent)}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}
.btn-primary{background:linear-gradient(135deg,#0891b2,#4f46e5);border:none;color:#fff}
.btn-primary:hover{filter:brightness(1.15)}
.form-ok{text-align:center;color:#4ade80;padding:10px 0}
.form-err{color:#f87171;font-size:12px;margin-top:4px;min-height:14px}

/* ---------- admin ---------- */
.admin-wrap{position:relative;z-index:1;max-width:1100px;margin:0 auto;padding:24px 20px 60px}
.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.admin-tabs button{
  padding:9px 18px;border-radius:999px;font-size:14px;color:var(--text);
  background:var(--chip);border:1px solid var(--panel-border);transition:.2s;
}
.admin-tabs button.active{background:linear-gradient(135deg,rgba(34,211,238,.3),rgba(129,140,248,.3));border-color:var(--accent)}
.panel{background:var(--panel);backdrop-filter:blur(12px);border:1px solid var(--panel-border);
  border-radius:var(--radius);padding:20px;margin-bottom:18px}
.panel h3{margin-bottom:14px;font-size:16px;letter-spacing:1px;display:flex;align-items:center;gap:8px}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}
.admin-table th,.admin-table td{padding:8px 10px;border-bottom:1px solid rgba(148,163,184,.15);text-align:left;vertical-align:middle}
.admin-table th{color:var(--muted);font-weight:600;font-size:12px}
.admin-table input,.admin-table select{
  width:100%;padding:6px 9px;border-radius:8px;font-size:13px;color:var(--text);
  background:var(--chip);border:1px solid var(--panel-border);outline:none;
}
.mini{padding:5px 10px;font-size:12px;border-radius:8px;border:1px solid var(--panel-border);
  background:var(--chip);color:var(--text);transition:.15s}
.mini:hover{background:var(--chip-hover)}
.mini.danger{border-color:rgba(248,113,113,.5);color:#f87171}
.mini.ok{border-color:rgba(74,222,128,.5);color:#4ade80}
.cat-block{border:1px solid var(--panel-border);border-radius:12px;padding:14px;margin-bottom:14px;background:rgba(10,16,32,.25)}
body.light .cat-block{background:rgba(255,255,255,.35)}
.cat-block .cat-head{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.cat-block .cat-head input{max-width:120px}
.lang-inputs{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px;margin:8px 0}
.lang-inputs .li{display:flex;flex-direction:column;gap:4px}
.lang-inputs .li span{font-size:11px;color:var(--muted)}
.tool-row{display:grid;grid-template-columns:52px 1.3fr 1.8fr auto auto;gap:8px;align-items:center;margin-bottom:8px}
.add-row{display:grid;grid-template-columns:52px 1.3fr 1.8fr auto;gap:8px;margin-top:8px}
.login-box{max-width:380px;margin:14vh auto 0}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);
  background:rgba(20,30,55,.95);border:1px solid var(--accent);color:var(--text);
  padding:11px 22px;border-radius:999px;font-size:14px;z-index:200;display:none;box-shadow:var(--shadow)}
.toast.show{display:block;animation:fadeUp .2s ease}
.hint{font-size:12px;color:var(--muted);line-height:1.7;margin-top:8px}
.sub-item{border:1px solid var(--panel-border);border-radius:12px;padding:12px 14px;margin-bottom:10px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.sub-item .info{flex:1;min-width:200px}
.sub-item .info b{display:block;font-size:14px}
.sub-item .info span{font-size:12px;color:var(--muted);word-break:break-all}
@media(max-width:640px){
  .tools{grid-template-columns:1fr}
  .tool-row,.add-row{grid-template-columns:44px 1fr 1fr;}
  .tool-row .mini,.add-row .btn{grid-column:auto}

  /* ---------- 移动端整齐顶栏 ---------- */
  .topbar{
    position:relative;flex-direction:column;align-items:stretch;
    gap:12px;padding:14px;
  }
  .brand{font-size:18px}
  /* 国旗按钮固定在品牌行右侧，与标题同一行 */
  .lang-select{position:absolute;top:14px;right:14px}
  /* 功能按钮等宽网格排列，不再参差换行 */
  .actions{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%}
  .actions .btn{
    justify-content:center;padding:10px 4px;font-size:13px;
    white-space:nowrap;overflow:hidden;
  }
  .hero{padding:36px 16px 20px}
  .hero h1{letter-spacing:2px}
}

/* ---------- 自动网站图标 ---------- */
.t-favwrap{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;flex:none}
.t-fav{width:16px;height:16px;border-radius:4px;background:#fff;padding:1px;box-shadow:0 0 0 1px rgba(148,163,184,.2)}
.t-letter{display:none;place-items:center;width:16px;height:16px;border-radius:4px;font-size:10px;font-weight:700;color:#fff;background:linear-gradient(135deg,#0ea5e9,#6366f1)}
.fav-preview{width:16px;height:16px;border-radius:4px;background:#fff;padding:1px;vertical-align:middle;box-shadow:0 0 0 1px rgba(148,163,184,.2)}
.icon-cell{display:flex;gap:5px;align-items:center;flex-wrap:wrap}
.icon-cell input{max-width:90px}